181979163000 has 128 divisors (see below), whose sum is σ = 630861192000. Its totient is φ = 48527769600.

The previous prime is 181979162971. The next prime is 181979163077. The reversal of 181979163000 is 361979181.

181979163000 is a `hidden beast` number, since 1 + 8 + 1 + 9 + 7 + 9 + 1 + 630 + 0 + 0 = 666.

181979163000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3342985 + ... + 3396984.

Almost surely, 2^181979163000 is an apocalyptic number.

181979163000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181979163000 is an abundant number, since it is smaller than the sum of its proper divisors (448882029000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181979163000 is a wasteful number, since it uses less digits than its factorization.

181979163000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6739999 (or 6739979 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 181979163000 in words is "one hundred eighty-one billion, nine hundred seventy-nine million, one hundred sixty-three thousand".